Filter Element Installation Ribs for Unambiguous Housing Assignment
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Solution Overview
Problem
Existing filter systems lack a mechanism to ensure unambiguous assignment of a filter element to its corresponding filter housing, leading to potential accidental insertion of non-fitting elements.
Innovation Solution
A hollow cylindrical filter element with a support frame featuring radially inward protruding installation ribs that only allow correct filter elements to fit, preventing incorrect installation by interacting with a support dome in the filter housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter element is designed without additional securing features, then the device complexity is reduced, but the reliability of correct installation is compromised due to potential accidental insertion of non-fitting elements
Solution Approach 1:
The support frame includes radially inward protruding installation ribs that create an asymmetric geometry. These ribs are positioned and dimensioned such that they only align with and fit into corresponding features of the correct filter housing, preventing insertion of incompatible elements. The asymmetric design ensures unambiguous assignment while maintaining structural simplicity.
Solution Approach 2:
The installation ribs act as intermediary features between the filter element and filter housing. These ribs protrude radially inward from the support frame and engage with corresponding receptacles or features in the filter housing, serving as a mechanical mediator that ensures correct alignment and prevents incorrect installation without adding complex securing mechanisms.
2Reliability
If installation ribs protrude far radially inward, then the prevention of incorrect installation is enhanced, but the flow cross-section is reduced and flow resistance increases
Solution Approach 1:
The installation ribs are designed with localized dimensions and positioning. They protrude radially inward only to the extent necessary to engage with corresponding features in the filter housing, rather than extending across the entire radial span. This local quality approach ensures reliable installation prevention while minimizing impact on the overall flow cross-section and reducing flow resistance.
Solution Approach 2:
The installation ribs provide partial action by engaging only at specific radial positions rather than creating a complete barrier. The ribs are dimensioned to provide sufficient engagement for correct installation prevention without excessively reducing the flow area, achieving the minimum necessary intervention to ensure reliability.
Data Source
AI summary
A filter element comprises a hollow cylindrical filter medium body, on the inside of which there is arranged a support frame that is a carrier of at least one installation rib protruding radially inward with respect to the support frame.